中国物理B ›› 2012, Vol. 21 ›› Issue (11): 110701-110701.doi: 10.1088/1674-1056/21/11/110701

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Ellipsometric configurations using a phase retarder and rotating polarizer and analyzer at any speed ratio

Sofyan A. Taya, Taher M. El-Agez, Anas A. Alkanoo   

  1. Physics Department, Islamic University of Gaza, P.O. Box 108, Gaza, Palestinian Authority
  • 收稿日期:2012-05-22 出版日期:2012-10-01 发布日期:2012-10-01

Ellipsometric configurations using a phase retarder and rotating polarizer and analyzer at any speed ratio

Sofyan A. Taya, Taher M. El-Agez, Anas A. Alkanoo   

  1. Physics Department, Islamic University of Gaza, P.O. Box 108, Gaza, Palestinian Authority
  • Received:2012-05-22 Online:2012-10-01 Published:2012-10-01
  • Contact: Sofyan A. Taya E-mail:staya@iugaza.edu.ps

摘要: In this paper, we propose an ellipsometer using a phase retarder and rotating polarizer and analyzer at a speed ratio 1:N. Different ellipsometric configurations are presented by assuming N = 1, 2, and 3. Moreover, two values of the offset angle of the retarder are considered for each ellipsometric configuration. The Muller formalism is employed to extract the Stokes parameters, from which the intensity received by the detector is obtained. The optical properties of c-Si are calculated using all configurations. A comparison between different configurations is carried out considering the effect of the noise on the results and the uncertainties in the ellipsometric parameters as functions of the uncertainties of the Fourier coefficients. It is found that the alignment of the phase retarder has a crucial impact on the results and the ellipsometric configuration with speed ratio 1:1 is preferred over the other configurations.

关键词: ellipsometry, phase retarder, rotating polarizer and analyzer

Abstract: In this paper, we propose an ellipsometer using a phase retarder and rotating polarizer and analyzer at a speed ratio 1:N. Different ellipsometric configurations are presented by assuming N = 1, 2, and 3. Moreover, two values of the offset angle of the retarder are considered for each ellipsometric configuration. The Muller formalism is employed to extract the Stokes parameters, from which the intensity received by the detector is obtained. The optical properties of c-Si are calculated using all configurations. A comparison between different configurations is carried out considering the effect of the noise on the results and the uncertainties in the ellipsometric parameters as functions of the uncertainties of the Fourier coefficients. It is found that the alignment of the phase retarder has a crucial impact on the results and the ellipsometric configuration with speed ratio 1:1 is preferred over the other configurations.

Key words: ellipsometry, phase retarder, rotating polarizer and analyzer

中图分类号:  (Polarimeters and ellipsometers)

  • 07.60.Fs